S-(2-chloro-6-fluorobenzyl)-L-cysteine CAS 1241383-43-6
| CAS No. | 1241383-43-6 |
| Molecular Formula | C10H11ClFNO2S |
| Molecular Weight | 263.72 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
CATO supplies S-(2-chloro-6-fluorobenzyl)-L-cysteine (CAS 1241383-43-6), a certified reference material (molecular formula C10H11ClFNO2S, MW 263.72 g/mol) for analytical method development and quality control.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution, S-(2-chloro-6-fluorobenzyl)-L-cysteine is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 263.72 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C10H11ClFNO2S |
| Molecular Weight | 263.72 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related S Standards
- Ethyl 4-chloro-6-ethylquinoline-3-carboxylate (CAS 1019345-40-4)
- 2-(((3-Chloro-4-methoxyphenyl)amino)methyl)phenol (CAS 1019595-94-8)
- 6-Chloro-N-(4-methoxyphenethyl)pyridazin-3(2h)-imine (CAS 1040013-91-9)
- 4-Chloro-5-((2-methylphenethyl)amino)pyridazin-3(2h)-one (CAS 1062009-47-5)
- 2-Chloro-5,6,7,8,9,10-hexahydrocyclohepta[b]indole-6-carboxylic acid (CAS 1083057-68-4)
- 4-Chloro-N-isobutylquinazoline-7-carboxamide (CAS 1092460-43-9)
- Ethyl 4-chloro-8-ethylquinoline-3-carboxylate (CAS 113515-72-3)
- 4-Chloro-2-(3-cyclopentyl-1,2,4-oxadiazol-5-yl)aniline (CAS 1182447-14-8)
Recommended Standards
- 2-Chloro-n-[2-(naphthalen-2-yloxy)ethyl]acetamide (CAS 1225890-90-3)
- 6-Chloro-N-(4-isopropoxyphenyl)pyrimidin-4-amine (CAS 1242241-02-6)
- 1-(3-Chloro-4-cyanophenyl)-3-cyclopentylurea (CAS 1197501-84-0)
- 3-(Benzyloxy)-5-chloro-2-ethoxypyridine (CAS 1245563-13-6)
- 1-Ethynylcyclobutanamine (CAS 933697-50-8)
- (7-Chloro-1-(3-methoxypropyl)-1H-benzo[d]imidazol-2-yl)methanol (CAS 1437480-62-0)
- 2-cyclopentylacetonitrile (CAS 5732-87-6)
- Methyl 8-hydroxy-2-nitroindolizine-7-carboxylate (CAS 1706437-92-4)
- methyl 4-[(4-fluorophenyl)methyl]oxane-4-carboxylate (CAS 1803582-53-7)
- Methyl 2-(3,5-dibromo-2-hydroxyphenyl)acetate (CAS 76251-01-9)
- Ethyl 2-bromo-6-methoxybenzoate (CAS 1214387-55-9)
- 3-Methyl-1-(4-nitrophenyl)-5-phenyl-1,4-dihydroimidazo[4,5-c]pyrazole (CAS 63330-31-4)
- 5-Ethyl-1-methyl-3-(3-nitrophenyl)-1H-1,2,4-triazole (CAS 1416440-36-2)
- Neuropeptide Y (1-24) amide (human, rat) (CAS 131448-51-6)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com